text: //
  // Copyright 2018 Pixar
  //
  // Licensed under the Apache License, Version 2.0 (the "Apache License")
  // with the following modification; you may not use this file except in
  // compliance with the Apache License and the following modification to it:
  // Section 6. Trademarks. is deleted and replaced with:
  //
  // 6. Trademarks. This License does not grant permission to use the trade
  //    names, trademarks, service marks, or product names of the Licensor
  //    and its affiliates, except as required to comply with Section 4(c) of
  //    the License and to reproduce the content of the NOTICE file.
  //
  // You may obtain a copy of the Apache License at
  //
  //     http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the Apache License with the above modification is
  // distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  // KIND, either express or implied. See the Apache License for the specific
  // language governing permissions and limitations under the Apache License.
  //
  #include "pxr/imaging/hdSt/unitTestDelegate.h"
  
  #include "pxr/imaging/hd/basisCurves.h"
  #include "pxr/imaging/hd/sprim.h"
  #include "pxr/imaging/hd/mesh.h"
  #include "pxr/imaging/hd/meshTopology.h"
  #include "pxr/imaging/hd/points.h"
  #include "pxr/imaging/hd/renderDelegate.h"
  #include "pxr/imaging/hd/texture.h"
  #include "pxr/imaging/hdSt/textureResource.h"
  
  #include "pxr/base/tf/staticTokens.h"
  #include "pxr/base/gf/matrix4f.h"
  #include "pxr/base/gf/rotation.h"
  
  #include "pxr/imaging/glf/simpleLight.h"
  #include "pxr/imaging/glf/baseTexture.h"
  #include "pxr/imaging/glf/textureRegistry.h"
  #include "pxr/imaging/glf/ptexTexture.h"
  
  PXR_NAMESPACE_OPEN_SCOPE
  
  template <typename T>
  static VtArray<T>
  _BuildArray(T values[], int numValues)
  {
      VtArray<T> result(numValues);
      std::copy(values, values+numValues, result.begin());
      return result;
  }
  
  HdSt_UnitTestDelegate::HdSt_UnitTestDelegate(HdRenderIndex *parentIndex,
                                           SdfPath const& delegateID)
    : HdUnitTestDelegate(parentIndex, delegateID)
  {
  }
  
  HdSt_UnitTestDelegate::~HdSt_UnitTestDelegate()
  {
  }
  
  void
  HdSt_UnitTestDelegate::AddTexture(SdfPath const& id, 
                                    GlfTextureRefPtr const& texture)
  {
      HdRenderIndex& index = GetRenderIndex();
      index.InsertBprim(HdPrimTypeTokens->texture, this, id);
      _textures[id] = _Texture(texture);
  }
  
  /*virtual*/
  HdTextureResourceSharedPtr
  HdSt_UnitTestDelegate::GetTextureResource(SdfPath const& textureId)
  {
      GlfTextureHandleRefPtr texture =
          GlfTextureRegistry::GetInstance().GetTextureHandle(_textures[textureId].texture);
  
      // Simple way to detect if the glf texture is ptex or not
      bool isPtex = false;
  #ifdef PXR_PTEX_SUPPORT_ENABLED
      GlfPtexTextureRefPtr pTex = 
          TfDynamic_cast<GlfPtexTextureRefPtr>(_textures[textureId].texture);
      if (pTex) {
          isPtex = true;
      }
  #endif
  
      return HdTextureResourceSharedPtr(
          new HdStSimpleTextureResource(texture,
                                        isPtex,
                                        HdWrapUseMetaDict,
                                        HdWrapUseMetaDict,
                                        HdMinFilterNearestMipmapLinear,
                                        HdMagFilterLinear,
                                        0));
  }
  
  PXR_NAMESPACE_CLOSE_SCOPE
  
  